ALL is a three-letter abbreviation with multiple meanings, as described below:

• Acute lymphoblastic leukemia, a leukemia affecting mostly children
• Allative case
• American Life League, the largest pro-life organization in the United States
• Lek (currency), the national currency of Albania; "ALL" is the ISO 4217 code for the currency
• ALL (band), a California, United States punk rock band
• Surf (detergent), as an alternative name ("All") for this laundry detergent
• Universal quantification, a concept ("all") in predicate logic
• The Australian Lacrosse League, an annual elite-level men's lacrosse competition in Australia
• América Latina Logística, a railroad company in Brazil

All can also mean:

• The All, a Hermetic conception of God
• Another marketed name for Surf detergent.

ALL | ALL | ALL